Making rubber molds and multiple castings of 3-D prints made with SLA is often a goal of model makers. As 3-D printing technology using SLA resin continues to evolve, there are best mold making practices that can help you be successful.
Platinum silicones offer the advantage of dimensional stability and long-term library life. However, platinum silicones are more subject to cure inhibition against a UV cure resin model that is not fully cured. Smooth-On platinum cure silicones will work against most SLA 3D print models with one caveat; the printed model must be fully UV cured. When models are done printing, they are not fully cured.
Mixer print file can be found here: https://www.thingiverse.com/thing:4648372
Read our full guide here: https://www.smooth-on.com/support/faq/210/
Printer-friendly version: https://www.smooth-on.com/assets/pdf/Molding%20UV%20Cured%20Resin%20Best%20Practices%20Guide.pdf